136 
BRITISH RADIATA 4 
2. Crisia geniculata. 
Tibiana, Lister, Phil. Trans. 1834, p. 385. pi. 12. bg. 5. 
Crisia geniculata, Ann. des Sci. Nat. n.s. ix, 19?* 
pi. 6. bg. 1 ; Mem. 5 ; Johnst. Hist. Brit. Zooph. ed. 2. p. 287. 
a. On Fuci, with Sertularia polyzonias. Ireland, W. 
Thompson, Esq. Presented by G. Johnston, M.D. 
h. “ A specimen which proves that Cr. geniculata and Cr. 
ebiu-nea ai-e one species?’^ Presented by G. Johnston, 
M.D. 
c. Ayrshire, Rev. D. Landsborough. Presented by G. John- 
ston, M.D. 
3. Crisia acideata. 
Crisia aculeata, Hassall, Ann. Mag. Nat. Hist. vi. 170. pi. 7- 
bgs. 3, 4, & vi. 366 ; Johnst. Hist. Brit. Zooph. ed. 2. p. 285. 
Crisie ivoire, M. -Edwards, Ann. des Sci. Nat. n. s. ix. 198. pi. 6, 
bg. 2 ; not Lamx. 
Crisia eburnea. Van Beneden, Recherch. 52. pi. 6. bgs. 12-16 
(without the spinous processes). 
a.? b.l On Sertularia. Presented by G. Johnston, M.D. 
4. Crisia denticulata. 
Cellaiia denticulata, Lamk. Anim. s. Vert. ii. 137, ed. 2. ii. 182. 
Crisia denticulata, Johnst. Hist. Brit. Zooph. ed. 2. p. 284. t. 50. 
bgs. 5, 6. 
Crisie dentelee, M. -Edwards, Ann. des Sci. Nat. n.s. ix. 201. 
pi. 7- fig. 1. 
Crisia luxata, Flem. Brit. Anim. 540 ; Blainv. Diet. S. N. lx. 424; 
Actinol. 460 ; Johnst. Brit. Zooph. 262 ; Thompson, Ann. Nat. 
Hist. V. 252; Couch, Zooph. Cornw. 42; Corn. Faun. in. 99. 
pi. 18. bg. 3; Macgilliv. Ann. ^ Mag. Nat. Hist. ix. 466. 
Crisia patagonica?, D^Orbigny, Voy. Am4r. Merid. 
a. Dr}', on Sertularia. Berwick Bay. Presented by G. 
Johnston, M.D. 
b. Dry, on Fuci. Camlough, co. Antrim. Presented by 
G. Johnston, M.D. 
c. On black paper. Presented by G. Johnston, M.D. 
d. Jersey. Presented by G. Johnston, M.D. 
2. Falcaria. 
Falcaria, Oken, Lehrb. Nat. 91, 1815; F. comuta, type. 
Crisidia, M.-Edwards, Mhn. ; Johnst. Brit. Zooph. ed. 2. 287, 
1847. 
Eucratea, Lamx. Bull. Soc. Phil. hi. 1812; E. cornuta, type. 
Unicellaria, sp. Blainv. Diet. Sci, Nat. Lx. 1830. 
